When opening a 1.13.2 world ,which had shulker boxes placed down, in the latest snapshot causes the shulker boxes to lose whatever was inside them.
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When opening a 1.13.2 world ,which had shulker boxes placed down, in the latest snapshot causes the shulker boxes to lose whatever was inside them.
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Minecraft 18w48b
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Isn't because you upgraded your world, it's because you 'reloaded' the world with upgrading. Duplicate of MC-138938.